Received 28 August 2009
The title compound, C10H16Br2N4, was synthesized by the reaction of 1-methylimidazole and 1,2-dibromoethane in toluene. The complete dication is generated by a crystallographic inversion centre situated at the mid-point of the ethane C-C bond. In the crystal structure, weak intermolecular C-HBr interactions link the molecules into chains along the b axis and an intramolecular C-HBr close contact is also present.
Data collection: CAD-4 EXPRESS (Enraf-Nonius, 1985); cell refinement: CAD-4 EXPRESS; data reduction: XCAD4 (Harms & Wocadlo,1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: AT2872 ).
The authors thank the Center of Testing and Analysis, Nanjing University, for support.
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